Integumentary System Flashcards
Concerning the skin – mark the correct statements:
a) the epidermis is of ectodermal origin
b) cells of the stratum granulosum contain strongly eosinophilic, keratohyaline gra-
nules
c) the dermis is of ectodermal origin
d) cells capable of mitoses are found in the Malphigian layer, which is formed of
the stratum basale and the stratum lucidum
A
Concerning the skin – mark the correct statements:
a) thin skin is found everywhere on the body, except the genitals, palms and soles
b) dermatoglyphics are formed by dermal papillae and are unique for each indivi-
dual
c) stratum basale is rich in desmosomes and hemidesmosomes
d) Merkel’s cells are typical for the dermis
B,c
Concerning the skin – mark the correct statements:
a) epidermis is vascularised
b) Langerhans cells are the antigen-presenting ones
c) Langerhans cells are found in stratum spinosum
d) dermis is vascularised
B,c,d
Concerning the skin – mark the correct statements:
a) Merkel’s cells are the antigen-presenting ones
b) papillary layer is formed by the loose connective tissue
c) reticular layer is rich in collagen type I
d) subcutaneous tissue is formed by the loose connective tissue
B,c,d
Concerning the skin – mark the correct statements:
a) free nerve endings are frequently found in the dermal papillae
b) Vater-Pacini corpuscles can be also found in organs
c) hair colour is influenced by melanocytes
d) each hair arises from the hair follicle, which is terminally dilated in the hair bulb
A,b,c,d
Concerning the skin – which of the following statements are incorrect?
a) the duct of the sebaceous gland usually opens into the hair follicle
b) sebaceous gland is a kind of a holocrine gland
c) most of the sweat glands are simple, merocrine glands
d) Meibomian gland in the eyelid is a kind of a sebaceous, eccrine gland
D
Choose the layers of the skin:
a) stratum granulosum of the epidermis
b) papillary layer
c) spindle layer
d) multiforme layer
A,b
Concerning the melanocytes:
a) they may contain eumelanine
b) they may contain pheomelanin
c) they are of the neural crest origin
d) they are of ectodermal origin
A,b,c,d
Which of the following are the sensory skin receptors?
a) free nerve endings
b) Merkel’s corpuscle
c) Ruffini-Paccioni corpuscle
d) Krause’s corpuscle
A,d
Concerning the skin, mark the correct statements:
a) keratin is a skleroprotein, typical for cells of the stratum corneum
b) epidermis is avascular
c) epidermis consists of the keratinized stratified squamous epithelium
d) cells of epidermis are called keratinocytes
A,b,c,d
The epidermis:
a) contains no blood vessels
b) is formed by stratified squamous epithelium covered with layer of keratinization
c) contains hyaline cartilage
d) contains sero-mucous mixed glands
A,b
In the epidermis:
a) cells are nourished by diffusion from blood capillaries extending to the upper
layers of the dermis
b) the epithelium can be subdivided into the strata
c) cells are formed through mitosis at the basal layer
d) the daughter cells stay fixed at the basement membrane and do not migrate
anywhere
A,b,c
In the epidermis:
a) all cells of the epidermis are fixed to the basement membrane
b) cells can move up the strata changing shape and composition
c) cells have various shape
d) there are islands of cartilage
B,c
The dermis:
a) consists of connective tissue
b) contains cartilage
c) it harbors mechanoreceptors and other nerve endings
d) it contains sero-mucous glands
A,c
The dermis contains:
a) sweat glands
b) sebaceous glands
c) lymphatic and blood vessels
d) Kupffer cells
A,b,c
Melanocytes:
a) are melanin-producing cells
b) are located in the cartilage
c) can be found in the middle layer of the eye, the uvea
d) are a component of reflex arch
A,c
Lamellar corpuscles (Pacinian, Vater-Pacini corpuscles):
a) are macrophages
b) are responsible for sensitivity to vibration and pressure
c) are located inside the cartilage
d) are larger than both Merkel cells and Meissner corpuscles
B,d
Lamellar corpuscles (Pacinian, Vater-Pacini corpuscles):
a) are one of the four major types of mechanoreceptors
b) are responsible for sensitivity to vibration and pressure
c) are always within the epidermis
d) are always unicellular
A,b
What are the four major types of mechanoreceptors in skin?
a) Vater-Pacini endings
b) Meissner endings
c) Kupfer cells
d) Ruffini endings
A,b,d
Meissner’s corpuscles (tactile corpuscles):
a) are responsible for sensitivity to fine touch
b) are present only in bone and cartilage
c) are primarily located just beneath the epidermis within the dermal papillae
d) are encapsulated unmyelinated nerve endings, which consist of flattened sup- portive cells arranged as horizontal lamellae surrounded by a connective tissue capsule
A,c,d
